diff --git a/hw/xfree86/common/xf86.h b/hw/xfree86/common/xf86.h
index 88d5e2705..0885f13f9 100644
--- a/hw/xfree86/common/xf86.h
+++ b/hw/xfree86/common/xf86.h
@@ -279,8 +279,6 @@ xf86ConfigFbEntity(ScrnInfoPtr pScrn, int scrnFlag,
                    int entityIndex, EntityProc init,
                    EntityProc enter, EntityProc leave, void *private);
 
-extern _X_EXPORT Bool
-xf86IsScreenPrimary(ScrnInfoPtr pScrn);
 extern _X_EXPORT Bool
 xf86IsUnblank(int mode);
 
diff --git a/hw/xfree86/common/xf86Helper.c b/hw/xfree86/common/xf86Helper.c
index a666aeeef..391abffab 100644
--- a/hw/xfree86/common/xf86Helper.c
+++ b/hw/xfree86/common/xf86Helper.c
@@ -1612,18 +1612,6 @@ xf86ConfigFbEntity(ScrnInfoPtr pScrn, int scrnFlag, int entityIndex,
     return pScrn;
 }
 
-Bool
-xf86IsScreenPrimary(ScrnInfoPtr pScrn)
-{
-    int i;
-
-    for (i = 0; i < pScrn->numEntities; i++) {
-        if (xf86IsEntityPrimary(i))
-            return TRUE;
-    }
-    return FALSE;
-}
-
 Bool
 xf86IsUnblank(int mode)
 {
diff --git a/hw/xfree86/doc/ddxDesign.xml b/hw/xfree86/doc/ddxDesign.xml
index e391b1dcb..86f01140f 100644
--- a/hw/xfree86/doc/ddxDesign.xml
+++ b/hw/xfree86/doc/ddxDesign.xml
@@ -2600,18 +2600,6 @@ Several functions are provided to simplify resource registration:
 
 	      </blockquote></para></blockquote>
 
-	  <blockquote><para>
-	      <programlisting>
-    Bool xf86IsScreenPrimary(ScrnInfoPtr pScrn);
-	      </programlisting>
-	      <blockquote><para>
-      This function returns <constant>TRUE</constant> if the primary entity
-      is registered with the screen referenced by
-      <parameter>pScrn</parameter>.
-		</para>
-
-	      </blockquote></para></blockquote>
-
 	  <blockquote><para>
 	      <programlisting>
     pciVideoPtr xf86GetPciInfoForEntity(int entityIndex);